"Well, I promised to give you boys some lessons in revolver shooting," he said, tossing the reins to Tad who had come forward to take the pony. "Who can put a hole through my sombrero?" cried the Ranger sending his broad-brimmed Mexican hat spinning up into the air.

A flash and a bang followed almost on the instant. The Pony Rider Boys howled. The shot had been fired by Professor Zepplin and he had drilled a hole right through the Ranger's sombrero.

"Well, now, what do you think of that?" gasped Chunky, his eyes growing large. "I didn't think you could hit the side of a barn unless you were inside the barn."

The professor smiled grimly.

"I used to be counted the best revolver shot in my regiment when I was in the army. But I'm a little slow these days."

"Humph! I see you are," grunted Billy. "Lucky for me that you aren't quick or I wouldn't have had any hat left by this time. Anybody else want to try to put a hole through my hat?" he asked looking about.

"I was going to suggest that we throw up the professor's hat and let you take a shot at it," suggested Tad, coming up at this juncture.

"Here it goes," cried the professor sending the hat spinning away from them, with the edge of the brim almost toward them. The hat was spinning low and a very difficult mark to hit.

Tad thought the Ranger was going to take a shot at it, but instead of doing so, McKay nodded to Tad, with a merry twinkle in his eye.

Tad whipped out his revolver with a quickness that amazed the Ranger, and let go. His bullet snipped a piece from the edge of the rim. The force of the bullet turned the hat crown toward the shooter.